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首页> 外文期刊>Journal of Materials Science >A highly selective and sensitive colorimetric Hg2+ sensor based on hemicyanine-functionalized polyacrylonitrile fiber
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A highly selective and sensitive colorimetric Hg2+ sensor based on hemicyanine-functionalized polyacrylonitrile fiber

机译：基于半氰官能化聚丙烯腈纤维的高选择性和敏感的比色HG2 +传感器

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摘要

In this work, we have synthesized a novel hemicyanine-modified polyacrylonitrile fiber (HDBA-PAN(A)F) as a colorimetric Hg2+ sensor. The color is observed from dark red to orange by the naked eye only when the fiber is exposed to Hg2+. Positively, the HDBA-PAN(A)F shows high selectivity and sensitivity for Hg2+ compared with other metal ions such as Na+, Mg2+, Al3+, Ca2+, Cr3+, Mn2+, Co2+, Ni2+, Cu2+, Zn2+, Ag+, Cd2+ and Pb2+. Furthermore, the obtained fiber has a wide pH application range from 3 to 11 and also processes a lower detection limit of 1 x 10(-6) mol L-1 for Hg2+. Moreover, the HDBA-PAN(A)F undergoes an obvious color change toward Hg2+ even containing an excess of ethylenediaminetetraacetic acid disodium salt (EDTA-2Na) in the solution, indicating that the fiber has a stronger complexation affinity for Hg2+ than EDTA-2Na. Hence, the fiber sensor possesses the merits of low cost, high selectivity, low detection limit and environment-friendly property, which shows that it is a promising candidate for Hg2+ detection in water.
机译：在这项工作中，我们合成了一种新型血红石改性的聚丙烯腈纤维（HDBA-PAN（A）F），为比色HG2 +传感器。仅当纤维暴露于HG2 +时，肉眼从肉眼观察到从深红色到橙色的颜色。阳性，HDBA-PAN（A）F显示HG2 +的高选择性和灵敏度，与其他金属离子如Na +，Mg2 +，Al3 +，Ca2 +，Cr3 +，Mn2 +，CO 2 +，Ni2 +，Cu2 +，Zn2 +，Ag +，CD2 +和Pb2 +相比，与其他金属离子相比，相比，与其他金属离子相比。此外，所获得的纤维具有3至11的宽pH施加范围，并且还用于HG2 +的1×10（-6）摩尔L-1的较低检测限。此外，HDBA-PAN（A）F对HG2 +进行了明显的颜色变化，甚至在溶液中含有过量的乙二胺四乙酸二钠盐（EDTA-2NA），表明纤维对HG2 +的络合亲和力比EDTA-2NA更强。因此，光纤传感器具有低成本，高选择性，低检测极限和环保性质的优点，这表明它是HG2 +在水中检测的有希望的候选者。

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  • 来源
    《Journal of Materials Science》 |2018年第14期|共11页
  • 作者

    Zhao Yali; Xing Xiaoli; Gao Runjiao; Tao Minli; Zhang Wenqin;

  • 作者单位

    Tianjin Univ Sch Sci Dept Chem Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Sci Dept Chem Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Sci Dept Chem Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Sci Dept Chem Tianjin 300072 Peoples R China;

    Tianjin Univ Sch Sci Dept Chem Tianjin 300072 Peoples R China;

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  • 正文语种 eng
  • 中图分类 工程材料学;
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